I'm planning to add this feature on my application where it will display a single line of text on a label which the user imported.
How it works: The user imports a text file, then after a Button click the Label text will change to the first line of text on the text file that the user imported. After X amount of seconds, it will change to the second one. Basically, it will move vertically down until the last line then after it will stop.
List<string> lstIpAddress = new List<string>();
int nCount = 0;
private void Form1_Load(object sender, EventArgs e)
{
timer1.Interval = 30000;
}
private void LoadBTN_Click(object sender, EventArgs e)
{
OpenFileDialog load = new OpenFileDialog();
if (load.ShowDialog() == DialogResult.OK)
{
listBox1.Items.Clear();
load.InitialDirectory = Environment.SpecialFolder.Desktop.ToString();
load.Filter = "txt files (*.txt)|*.txt";
List<string> lines = new List<string>();
using (StreamReader r = new StreamReader(load.OpenFile()))
{
string line;
while ((line = r.ReadLine()) != null)
{
listBox1.Items.Add(line);
}
}
}
}
private void button1_Click(object sender, EventArgs e)
{
for (int nlstItem = 0; nlstItem < lstIpAddress.Count; nlstItem++)
{
listBox1.Items.Add(lstIpAddress[nlstItem]);
}
label2.Text = listBox1.Items[nCount].ToString();
nCount++;
timer1.Start();
}
private void timer1_Tick(object sender, EventArgs e)
{
timer1.Stop();
label2.Text = listBox1.Items[nCount].ToString();
timer1.Start();
}
You need to move nCount++; to a Timer1 click event. Also, you should check if nCount is in range of listBox1.Items.Count otherwise you will get an exception.
private void timer1_Tick(object sender, EventArgs e)
{
timer1.Stop();
nCount++;
if (nCount < listBox1.Items.Count)
{
label2.Text = listBox1.Items[nCount].ToString();
}
timer1.Start();
}
Related
I've written desktop application, that receives location via serial communication from NRF/GPS module, split that data in order to distinguish latitude, longitude and then i load these coordinates to map(i use GMap). But when i receive data, first 1 or 2 seconds it comes in a little confused form(like this 06840.370056;49.84006068). And i thought adding some Thread.Sleep will solve this problem, but instead application crashes after 5-10 seconds. How can i solve this problem, because i want my app run smoothly? Here is part of my code:
public partial class Form1 : Form
{
public string dataIn;
private List<PointLatLng> _points;
public Form1()
{
_points = new List<PointLatLng>();
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
GMapProviders.GoogleMap.ApiKey = AppConfig.Key;
string[] ports = SerialPort.GetPortNames();
cBoxCom.Items.AddRange(ports);
btnConnect.Enabled = true;
btnDisconnect.Enabled = false;
gMap.MapProvider = GMapProviders.GoogleMap;
gMap.ShowCenter = false;
gMap.DragButton = MouseButtons.Left;
gMap.SetPositionByKeywords("Chennai, India");
}
private void btnConnect_Click(object sender, EventArgs e)
{
serialPort1.PortName = cBoxCom.Text;
serialPort1.BaudRate = Convert.ToInt32(cBoxBaudrate.Text);
btnConnect.Enabled = false;
btnDisconnect.Enabled = true;
serialPort1.Open();
}
private void btnDisconnect_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen)
{
serialPort1.Close();
btnConnect.Enabled = true;
btnDisconnect.Enabled = false;
}
}
private void btnClearDataIn_Click(object sender, EventArgs e)
{
if (richBoxReciever.Text != "")
{
richBoxReciever.Text = " ";
}
}
private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
dataIn = serialPort1.ReadExisting();
this.Invoke(new EventHandler(ShowData));
}
private void ShowData(object sender, EventArgs e)
{
Thread.Sleep(3000);
richBoxReciever.Text += dataIn;
Thread.Sleep(5000);
string[] locationData = dataIn.Split(new char[] { ';' });
List<string> tokens = new List<string>();
foreach (string s in locationData)
{
if (s.Length != 0)
{
tokens.Add(s);
}
}
txtLat.Text = tokens[0];
txtLon.Text = tokens[1];
}
Currently i am having trouble updating a row in my listview that contains both text and a timer that counts down. So far I've tried updating the entire row as well as trying to update just the text and i get an error in each instance.
System.ArgumentOutOfRangeException: InvalidArgument=Value of '0' is not valid for 'index
I am also having a slight problem with the delete button. It deletes the row as planned but it appears the information is still running in the background and haven't come across any info on how to delete the session. I pray for your guidance.
private void Confirm_Click(object sender, EventArgs e)
{
CSession newSession = new CSession();
if(PasswordText.Text == "")
{
MessageBox.Show("Password not entered");
return;
}
newSession.password = PasswordText.Text;
newSession.purchased_time = workingTimeSpan;
newSession.remaining_time = workingTimeSpan;
newSession.status = "Online";
sessionlist.Add(newSession);
PasswordText.Text = "";
TimerLabel.Text = "";
workingTimeSpan = new TimeSpan();
}
private void DisplayAllSessions()
{
listView1.Items.Clear();
foreach(CSession c in sessionlist)
{
string[] row = { c.password, c.purchased_time.ToString(), c.remaining_time.ToString(), c.status };
ListViewItem i = new ListViewItem(row);
listView1.Items.Add(i);
}
}
private void timer1_Tick(object sender, EventArgs e)
{
foreach(CSession c in sessionlist)
{
if (c.remaining_time.TotalMinutes == 5 && !c.MessageDisplayed)
{
c.MessageDisplayed = true;
MessageBox.Show("Time almost up for client.");
}
if (c.remaining_time.TotalSeconds < 1)
{
c.status = "Offline";
}
if(c.status == "Online")
{
c.remaining_time -= oneSecond;
}
}
DisplayAllSessions();
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
Close();
}
private void Reset_Click(object sender, EventArgs e)
{
}
private void updatebutton()
{
listView1.SelectedItems[0].SubItems[0].Text = PasswordText.Text;
PasswordText.Text = "";
}
private void Update_Click(object sender, EventArgs e)
{
updatebutton();
}
private void listView1_SelectedIndexChanged(object sender, EventArgs e)
{
PasswordText.Text = listView1.SelectedItems[0].Text;
TimerLabel.Text = listView1.SelectedItems[0].SubItems[1].Text;
}
private void Delete_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Do you wish to delete.", "Removing User", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
listView1.Items.Clear();
timer1.Stop();
}
}
This is what i used for the update function and delete row function.
private void updatebutton()
{
CSession updatedsession = new CSession();
int updateindex = 0;
int index = 0;
foreach (CSession lookup in sessionlist)
{
if(lookup.password == PasswordText.Text)
{
if (MessageBox.Show("Do you wish to add time.", "Adding Time",
MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
updatedsession = lookup;
updateindex = index;
}
break;
}
index++;
}
updatedsession.purchased_time = workingTimeSpan +
updatedsession.purchased_time;
updatedsession.remaining_time = workingTimeSpan +
updatedsession.remaining_time;
sessionlist[updateindex] = updatedsession;
//sortedSessionList[PasswordText.Text] = updatedsession;
PasswordText.Text = "";
TimerLabel.Text = "";
workingTimeSpan = new TimeSpan();
}
private void Update_Click(object sender, EventArgs e)
{
updatebutton();
}
private void Delete_Click(object sender, EventArgs e)
{
CSession cSession = new CSession();
if (MessageBox.Show("Do you wish to delete.", "Removing User",
MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
int index = 0;
foreach (CSession c in sessionlist)
{
if(c.password == PasswordText.Text)
{
break;
}
index++;
}
sessionlist.RemoveAt(index);
}
}
In my form. I have two picturebox and a button that capture the image into picturebox.
Two Picturebox
WebcamImage - represent the live camera image
PreviewImage - represent the Captured image from webcamimage
When i saved this captured image it will go to my UserImage picturebox (In my Usercontrol)
The problems is i don't know how i'm gonna get the picturebox image path.
What i want is when i click my saved button the image path will be saved to my label text.
Here's my code
PS: I'm using Aforge.dll
public partial class CaptureImage : Form
{
private FilterInfoCollection CaptureDevice;
private VideoCaptureDevice FinalFrame;
RegisterCustomer _view;
public CaptureImage(RegisterCustomer view)
{
InitializeComponent();
this._view = view;
}
private void CaptureImage_Load(object sender, EventArgs e)
{
CaptureDevice = new FilterInfoCollection(FilterCategory.VideoInputDevice);
foreach (FilterInfo Device in CaptureDevice)
{
comboBox1.Items.Add(Device.Name);
}
comboBox1.SelectedIndex = 0;
FinalFrame = new VideoCaptureDevice();
FinalFrame = new VideoCaptureDevice(CaptureDevice[comboBox1.SelectedIndex].MonikerString);
if (FinalFrame.VideoCapabilities.Length > 0)
{
string highestSolution = "0;0";
//Search for the highest resolution
for (int i = 0; i < FinalFrame.VideoCapabilities.Length; i++)
{
if (FinalFrame.VideoCapabilities[i].FrameSize.Width > Convert.ToInt32(highestSolution.Split(';')[0]))
highestSolution = FinalFrame.VideoCapabilities[i].FrameSize.Width.ToString() + ";" + i.ToString();
}
}
FinalFrame.NewFrame += new NewFrameEventHandler(FinalFrame_NewFrame);
FinalFrame.Start();
btn_save.Hide();
btn_cancel.Hide();
}
void FinalFrame_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
WebcamImage.Image = (Bitmap)eventArgs.Frame.Clone();
}
private void CaptureImage_FormClosing(object sender, FormClosingEventArgs e)
{
if (FinalFrame.IsRunning == true)
{
FinalFrame.Stop();
}
}
private void btn_save_Click(object sender, EventArgs e)
{
_view.UserImage.Image = PreviewImage.Image;
this.Close();
}
private void btn_cancel_Click(object sender, EventArgs e)
{
this.Close();
}
private void btn_capture_Click(object sender, EventArgs e)
{
PreviewImage.Image = (Bitmap)WebcamImage.Image.Clone();
PreviewImage.BringToFront();
btn_capture.Hide();
btn_save.Show();
btn_cancel.Show();
}
}
This is only i know in getting the picturebox image path by using openfile dialog
using (OpenFileDialog ofd = new OpenFileDialog())
{
ofd.Filter = "Image Files (*.jpg;*.jpeg;.*.png; | *.jpg;*.jpeg;.*.png;)";
ofd.FilterIndex = 1;
ofd.Multiselect = false;
ofd.Title = "Select Image File";
if (ofd.ShowDialog() == DialogResult.OK)
{
location = ofd.FileName;
path.Text = location;
UserImage.Image = Image.FromFile(location);
UserImage.SizeMode = PictureBoxSizeMode.StretchImage;
}
}
Photo Example:
For Form_load Click
private void Form6_Load(object sender, EventArgs e)
{
for (int i = 0; i < itm.Length; i++)
{
listView1.Columns.Add(itm[i], size[i], HorizontalAlignment.Left);
}
listView1.GridLines = true;
listView1.View = View.Details;
listView1.FullRowSelect = true;
}
Code in Button Add_Click
private void btnadd_Click(object sender, EventArgs e)
{
ListViewItem data = new ListViewItem();
data.SubItems.Add(txtname.Text);
data.SubItems.Add(txtsur.Text);
data.SubItems.Add(txtage.Text);
listView1.Items.Add(data);
clear();
}
You need to set the Text property of new ListViewItem which will be displayed in the first column of the ListView.
private void btnadd_Click(object sender, EventArgs e)
{
ListViewItem data = new ListViewItem();
data.Text = (listView1.Items.Count + 1).ToString();
data.SubItems.Add(txtname.Text);
data.SubItems.Add(txtsur.Text);
data.SubItems.Add(txtage.Text);
listView1.Items.Add(data);
clear();
}
This should resolve your issue.
Iam new in programming.In windows Form application ,I want user can write a url in textbox and add (with button) in listbox as a favorite list,then user can click in listbox and then go to browser, finaly can save and open the list? whitout Microsoft Sql Database.I Need a source code.
textbox: (Enter your WebSite) : www.google.com
Button:ADD To List Box
Listbox:WWW.Google.com
Button :Save
Button :Open
You have to save the ListBox.Items as plain text file if not wanting to use database. Without binding, this simple problem becomes a little nasty if you start digging into writing it. Here is one of the solution you may need:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
int lastIndex = -1;
bool suppressSelectedIndexChanged;
//Click event handler for buttonAdd
private void buttonAdd_Click(object sender, EventArgs e)
{
listBox1.Items.Add(textBox1.Text);
suppressSelectedIndexChanged = true;
listBox1.SelectedIndex = listBox1.Items.Count - 1;
suppressSelectedIndexChanged = false;
}
//Click event handler for buttonRemove
private void buttonRemove_Click(object sender, EventArgs e)
{
if (listBox1.SelectedIndices.Count == 0) return;
int k = listBox1.SelectedIndices[0];
suppressSelectedIndexChanged = true;
for (int i = listBox1.SelectedIndices.Count - 1; i >= 0; i--)
listBox1.Items.RemoveAt(listBox1.SelectedIndices[i]);
suppressSelectedIndexChanged = false;
lastIndex = -1;
listBox1.SelectedIndex = k < listBox1.Items.Count ? k : listBox1.Items.Count - 1;
if (listBox1.Items.Count == 0) textBox1.Clear();
}
//Click event handler for buttonSave
private void buttonSave_Click(object sender, EventArgs e)
{
SaveFileDialog save = new SaveFileDialog();
save.Filter = "URLs file|*.urls";
save.FileOk += (s, ev) =>
{
using (StreamWriter writer = File.CreateText(save.FileName))
{
foreach (object item in listBox1.Items)
{
writer.WriteLine(item.ToString());
}
}
};
save.ShowDialog();
}
//Click event handler for buttonOpen
private void buttonOpen_Click(object sender, EventArgs e)
{
OpenFileDialog open = new OpenFileDialog();
open.Filter = "URLs file|*.urls";
open.FileOk += (s, ev) =>
{
listBox1.Items.Clear();
using (StreamReader reader = File.OpenText(open.FileName))
{
string line = "";
while ((line = reader.ReadLine()) != null)
{
listBox1.Items.Add(line);
}
}
};
open.ShowDialog();
}
//SelectedIndexChanged event handler for listBox1
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (suppressSelectedIndexChanged) return;
if (lastIndex > -1)
{
listBox1.Items[lastIndex] = textBox1.Text;
}
lastIndex = listBox1.SelectedIndex;
if (listBox1.SelectedIndex > -1)
textBox1.Text = listBox1.Items[listBox1.SelectedIndex].ToString();
}
//Click event handler for buttonVisit
private void buttonVisit_Click(object sender, EventArgs e)
{
if (listBox1.SelectedItem == null) return;
System.Diagnostics.Process.Start(listBox1.SelectedItem.ToString());
}
}
Here is the GUI screen shot for you to know which controls are needed:
private void btnAdd_Click(object sender, EventArgs e)
{
string _webstring = #"http://";
string _website = _webstring + textBox1.Text;
listBox1.Items.Add(_website);
using (StreamWriter w = File.AppendText("websites.txt"))
{
WriteLog(_website, w);
}
using (StreamReader r = File.OpenText("websites.txt"))
{
DisposeLog(r);
}
}
private void btnLaunch_Click(object sender, EventArgs e)
{
System.Diagnostics.Process.Start("iexplore.exe", listBox1.SelectedItem.ToString());
}
private void btnSave_Click(object sender, EventArgs e)
{
using (StreamWriter w = File.AppendText("websites.txt"))
{
foreach (string items in listBox1.Items)
{
WriteLog(items, w);
}
}
using (StreamReader r = File.OpenText("websites.txt"))
{
DisposeLog(r);
}
}
public static void WriteLog(string logMessage, TextWriter w)
{
w.WriteLine(logMessage, logMessage);
}
public static void DisposeLog(StreamReader r)
{
string line;
while ((line = r.ReadLine()) != null)
{
Console.WriteLine(line);
}
}
private void btnRetrieve_Click(object sender, EventArgs e)
{
using (TextReader txtRead = File.OpenText("Websites.txt"))
{
string _text = "";
string[] _textArray = null;
while ((_text = txtRead.ReadLine()) != null)
{
_textArray = _text.Split('\t');
listBox1.Items.Add(txtRead.ReadLine());
}
txtRead.Close();
}
}
hope this helps.. thanks